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the formula c=2πr relates the radius r of a circle to itscircumference c. solve the formula for r

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Reid Wolff
Reid WolffLv2
31 Oct 2019
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1) The formula for the area A of a circle with diamete d is A=pie(d/2)^2. Write an expression to represent the area of the circle.

2) The formula for the volume V of a right circular cone with radius r and height h is V = 1/3pie r^2h. Write an expression for the volume of a cone with r =3x and h=2x (Please show working)



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